US20170093248A1 - Driving Mechanism and Vehicle Utilizing the Driving Mechanism - Google Patents
Driving Mechanism and Vehicle Utilizing the Driving Mechanism Download PDFInfo
- Publication number
- US20170093248A1 US20170093248A1 US15/274,157 US201615274157A US2017093248A1 US 20170093248 A1 US20170093248 A1 US 20170093248A1 US 201615274157 A US201615274157 A US 201615274157A US 2017093248 A1 US2017093248 A1 US 2017093248A1
- Authority
- US
- United States
- Prior art keywords
- driving mechanism
- box
- rotor
- disposed
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 238000004804 winding Methods 0.000 claims abstract description 40
- 230000003139 buffering effect Effects 0.000 claims description 49
- 238000004891 communication Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000004907 flux Effects 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 208000016261 weight loss Diseases 0.000 description 3
- 239000013585 weight reducing agent Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
- E05F15/689—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings specially adapted for vehicle windows
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
- E05F15/689—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings specially adapted for vehicle windows
- E05F15/697—Motor units therefor, e.g. geared motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
- H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/43—Motors
- E05Y2201/434—Electromotors; Details thereof
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/43—Motors
- E05Y2201/434—Electromotors; Details thereof
- E05Y2201/442—Stators
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/55—Windows
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Definitions
- the present invention relates to a driving mechanism and a vehicle utilizing the driving mechanism.
- Open and close of a vehicle window is usually achieved by a driving mechanism.
- the driving mechanism generally includes a box, and a motor and a transmission assembly disposed in the box. When rotating, the motor drives the vehicle window to open or close through the transmission assembly.
- the traditional motor has a relatively independent structure, e.g. the motor includes an outer housing and a stator and a rotor disposed in the outer housing. Therefore, when the motor is connected to the box through its outer housing, it results in a large overall size of the driving mechanism, thus occupying a large mounting space.
- the present invention provides a driving mechanism including a box, a motor and a transmission mechanism.
- the motor includes a stator core, a winding wound around the stator core, and a rotor.
- the stator core is at least partially received in the box.
- the rotor is rotatably received in the stator core.
- no metal housing is disposed between the box and the stator core of the motor.
- the box comprises a first receiving portion defining a receiving chamber
- the stator core is at least partially received in the receiving chamber
- the driving mechanism further comprises a cover body
- the cover body covers an opening of the receiving chamber
- the box further comprises a second receiving portion defining a receiving slot, the receiving slot is in communication with the receiving chamber, and the transmission assembly is disposed in the receiving slot and connected to the rotor.
- a buffering member is disposed between the stator core and the box.
- the buffering member comprises a sleeve portion attached around the stator core and a buffering portion disposed on the sleeve portion, and the buffering portion is disposed between the sleeve portion and the box.
- the driving mechanism further comprises a cover body covering on the box
- the buffering member further comprises a retaining portion
- the retaining portion is a flange disposed at one end of the sleeve portion, and when the cover body covers on the box, the retaining portion is sandwiched between the cover body and the box.
- the motor is a single phase permanent magnet brushless motor.
- the stator core comprises a ring-shaped stator yoke and stator teeth coupled to an inner side of the stator yoke, and the winding is wound around the stator teeth.
- the stator yoke includes two opposite first sidewalls and two opposite second sidewalls, the first sidewalls and the second sidewalls are connected such that the stator yoke is substantially rectangle shaped, the stator teeth are coupled to the first sidewalls.
- a distance between the two first sidewalls is greater than a distance between the two second sidewalls.
- the number of the stator teeth is two, each stator tooth comprises a winding portion and pole shoes coupled to the winding portion, the winding portion is connected to one corresponding first sidewall, the pole shoes are disposed at one end of the winding portion away from the first sidewall and faces toward the rotor, and the winding comprises two coils each wound around the winding portion of one corresponding stator tooth.
- each second sidewall facing toward the rotor is provided with two extensions, one end of each extension away from the second sidewall extends in a direction away from the second sidewall and away from the other extension, all the pole shoes and all the extensions cooperatively define a receiving space in which the rotor is received.
- each pole shoe and the adjacent extension are spaced by an opening or connected by a magnetic bridge.
- one side of the pole shoe facing toward the rotor defines a recess
- one side of the extension facing toward the rotor defines a recess
- the rotor comprises a rotary shaft ratatably disposed in the box, a rotor core disposed around the rotary shaft, and a plurality of permanent magnetic poles disposed around the rotor core.
- the number of the permanent magnetic poles is 4, and the 4 permanent magnetic poles are spaced along a circumferential direction of the rotor core.
- outer surfaces of the permanent magnetic poles are located on a same cylindrical surface.
- the transmission assembly comprises a worm/worm gear mechanism, and the box is a gearbox.
- the present invention provides a vehicle including a vehicle window and any driving mechanism as described above.
- the motor is connected to the vehicle window through the transmission assembly and is capable of driving the vehicle window to move.
- the stator core of its driving assembly can be partially received in the box, the outer iron housing of the traditional motor is omitted, which reduces its mounting space, such that the driving mechanism has a relatively smaller overall size and overall weight.
- FIG. 1 is a perspective view of a driving mechanism according to one embodiment of the present invention.
- FIG. 2 is a perspective, exploded view of the driving mechanism of FIG. 1 .
- FIG. 3 is a sectional view of the driving mechanism of FIG. 1 .
- FIG. 4 is an enlarged view of the portion IV of the driving mechanism of FIG. 3 .
- FIG. 5 is a perspective view of a driving assembly of the driving mechanism of FIG. 2 .
- FIG. 6 is a perspective view of the driving assembly of FIG. 5 .
- FIG. 7 is a cross-sectional view of the driving assembly of FIG. 5 .
- FIG. 8 is a sectional view of the driving mechanism of FIG. 1 , viewed from another direction.
- FIG. 9 is a perspective view of a buffering member of the driving mechanism of FIG. 2 .
- FIG. 10 illustrates the driving mechanism of FIG. 1 used in a vehicle.
- a component when a component is described to be “fixed” to another component, it can be directly fixed to the another component or there may be an intermediate component, i.e. indirectly fixed to the another component through a third component.
- a component when a component is described to be “connected” to another component, it can be directly connected to the another component or there may be an intermediate component.
- a component When a component is described to be “disposed” on another component, it can be directly disposed on the another component or there may be an intermediate component.
- the directional phraseologies such as “perpendicular”, “horizontal”, “left”, “right” or similar expressions are for the purposes of illustration only.
- a driving mechanism 1 in accordance with one embodiment of the present invention is used to drive an external device to rotate or drive the external device to translate through a transmission mechanism.
- the external device may be a vehicle window 2 (as shown in FIG. 10 ). By controlling the driving mechanism 1 to operate, the vehicle window 2 can be driven to open or close.
- the external device may be another movable device such as a wheel of a toy car or fan blades, which will be described in detail below.
- the driving mechanism 1 includes a mounting assembly 200 , a driving assembly 100 , a buffering member 300 , and a transmission assembly 400 .
- the driving assembly 100 , the buffering member 300 and the transmission assembly 400 are all disposed on the mounting assembly 200 .
- the transmission assembly 400 is connected to the driving assembly 100 .
- the mounting assembly 200 is configured to mount the driving mechanism 1 to the external device, for allowing the driving assembly 100 to drive the external device to move through the transmission assembly 400 .
- the buffering member 300 is disposed between the driving assembly 100 and the mounting assembly 200 .
- the buffering member 300 is used to absorb vibrational impact produced by the driving assembly 100 to reduce vibrations transmitted to the mounting assembly 200 and the transmission assembly 400 , thereby reducing the overall vibrations and noises of the driving mechanism 1 .
- the mounting assembly 200 includes a box 21 , a cover body 23 , and mounting portions 25 .
- the cover body 23 covers on the box 21
- the mounting portions 25 are connected to the box 21 .
- the box 21 is a gearbox, which receives the driving assembly 100 and the transmission assembly 400 .
- the box 21 includes a first receiving portion 211 and a second receiving portion 213 disposed adjacent to the first receiving portion 211 .
- the first receiving portion 211 defines a generally column shaped receiving chamber 2111 for receiving the driving assembly 100 .
- the receiving chamber 2111 includes an opening 2113 .
- the receiving chamber 2111 communicates with the outside environment via the opening 2113 .
- the second receiving portion 213 defines a receiving slot 2131 that is generally circular disc-shaped, for receiving the transmission assembly 400 .
- the receiving slot 2131 communicates with the receiving chamber 2111 at one side of the receiving slot 2131 , for allowing the transmission assembly 400 to engage with the driving assembly 100 at this communication area between the receiving slot 2131 and the receiving chamber 2111 .
- the cover body 23 covers the opening 2113 and is detachably connected with the box 21 .
- the cover body 23 is used to close the receiving chamber 2111 , such that the receiving chamber 2111 and the receiving slot 2131 are substantially isolated from the outside environment to achieve a dustproof seal.
- the number of the mounting portions 25 is three.
- the three mounting portions 24 are spaced and disposed around the second receiving portion 213 .
- the mounting portions 25 are used to connect to the external device so as to mount the driving mechanism 1 to the external device. It should be understood that the number of the mounting portions 25 is not intended to be limited to three, which can also be two or four.
- part of the material of the box 21 and/or the mounting portions 25 are removed to form a plurality of spaced weight-reduction sections 27 arranged on the box 21 and/or the mounting portions 25 .
- the weight-reduction sections 27 are through-hole structures passing through the box 21 and/or the mounting portions 25 . It should be understood that the weight-reduction sections 27 may also be groove structures formed in the box 21 and/or the mounting portions 25 .
- the driving assembly 100 is a single phase permanent magnet motor.
- the driving assembly 100 is single phase permanent magnet brushless motor.
- the driving assembly 100 is partially received in the first receiving portion 211 , for driving the transmission assembly 400 to move which further drives the external device to move.
- the cover body 23 covers one end of the driving assembly 100 and is fixedly connected to the box 21 through fasteners such as screws, such that the driving mechanism 1 overall has a smaller size, and the size of the external device utilizing the driving mechanism 1 can therefore be reduced.
- the driving assembly 100 includes a stator core 10 , a winding 30 , and a rotor 50 .
- the driving assembly 100 is an inner rotor motor
- the stator core 10 is received in the box 21 of the mounting assembly 200
- the winding 30 is wound around the stator core 10
- the rotor 50 is rotatably received in the stator core 10 and connected to the transmission assembly 400 .
- the stator core 10 includes a stator yoke 12 and stator teeth 14 .
- the stator teeth 14 extend inwardly from the stator yoke 12 .
- the stator yoke 12 is directly fixedly mounted within the first receiving portion 211 of the box 21 .
- an outer housing of a traditional motor is omitted from the driving assembly 100 . That is, part of the box 21 forms the outer housing of the motor, which further reduces the size and weight of the external device utilizing the driving mechanism 1 .
- FIG. 7 is a cross-sectional view of the driving assembly 100 according to one embodiment of the present invention.
- the cross-section as used in this disclosure refers to an axial section, i.e. a section formed by a plane cutting through the driving assembly 100 , wherein the plane is perpendicular to the rotary shaft of the driving assembly 100 .
- a cross-section of the stator yoke 12 is substantially in the shape of a closed rectangle, including two arcuate first sidewalls 121 and two flat second sidewalls 123 .
- the two first sidewalls 121 are disposed opposing to each other, the two second sidewalls 123 are disposed opposing to each other, and two distal ends of each second sidewall 123 are connected to two distal ends of the two first sidewalls 121 , respectively, such that the cross-section of the stator yoke 12 is in the shape of a continuously closed ring.
- outer circumferential surfaces of the first sidewalls 121 are substantially a part of a cylindrical surface, such that the outer profile of the cross-section of the first sidewall 121 is in the shape of a circular arc.
- Inner surfaces of the first sidewalls 121 are substantially flat surfaces and, therefore, each first sidewall 121 has a thickness that is smaller at two sides than at a middle thereof.
- An outer circumferential surface of each second sidewall 123 is substantially a flat surface, such that the outer profile of the cross-section of the second sidewall 123 is generally a straight line segment.
- each second sidewall 123 is provided with an auxiliary tooth 1230 .
- the auxiliary tooth 1230 includes two extensions 1231 .
- the extensions 1231 are used to conduct magnetic flux and assist the stator teeth 14 to form magnetic flux loops.
- One end of each extension 1231 is a connecting end (not labeled), and the other end is an extension end (not labeled).
- the connecting ends of the two extensions 1231 are connected with each other and connected to a substantially middle position of the second sidewall 123 .
- the extension ends of the two extensions 1231 both extend in a direction away from the second sidewall 123 , and the extension ends of the two extensions 1231 are spaced away from each other, such that an outer profile of cross-sections of the two extensions 1231 is substantially V-shaped or arc-shaped.
- the number of the stator teeth 14 is two.
- the stator teeth 14 are connected to the inner surfaces of the first sidewalls 121 , respectively, for allowing the winding 30 to be wound thereon.
- each stator tooth 14 is substantially Y-shaped, including a winding portion 141 and two pole shoes 143 .
- the winding portion 141 extends radially inwardly from a middle of the inner surface of the first sidewall 121 .
- the two pole shoes 143 are disposed at one end of the winding portion 141 away from the corresponding first sidewall 121 .
- the two pole shoes 143 of each stator tooth 14 extend from a distal end of the winding portion 141 along a circumferential direction of the rotor 50 , toward two adjacent extensions 1231 at opposite sides of the winding portion 141 , respectively, such that an outer profile of cross-sections of the two pole shoes 143 is substantially V-shaped or arc-shaped, and hence the two pole shoes 143 and the winding portion 141 cooperatively form the Y-shaped profile of the stator tooth 14 .
- the pole shoes 143 can prevent the winding 30 from falling off the winding portion 141 and, at the same time, can be used to conduct magnetic flux.
- each pole shoe 143 has one end as a connecting end (not labeled) and the other end as an extension end (not shown).
- the connecting ends of the two pole shoes 143 are connected with each other and connected to one side of the winding portion 141 away from the first sidewall 121 .
- the extension ends of the two pole shoes 143 both extend in the circumferential direction of the rotor 50 and away from the first sidewall 141 , and the extension ends of the two pole shoes 143 are spaced away from each other, such that an outer profile of cross-sections of the two pole shoes 143 is substantially V-shaped or arc-shaped and hence an outer profile of the cross-section of the stator tooth 14 is substantially Y-shaped.
- each pole shoe 143 is close to an extension end of the extension 1231 of the auxiliary tooth 1230 adjacent the pole shoe 143 .
- the pole shoes 143 of the stator teeth 14 and the extensions 1231 of the auxiliary teeth 1230 cooperatively faun a receiving space 16 for receiving the rotor 50 therein.
- each pole shoe 143 , the extension 1231 adjacent the pole shoe 143 and the stator yoke 12 cooperatively form a receiving slot 15 for receiving the winding 30 therein.
- each pole shoe 143 and the distal end of the extension 1231 adjacent the pole shoe 143 are spaced by a preset distance to form an opening 18 , thereby reducing magnetic leakage. It should be understood that the distal end of the extension 1231 and adjacent pole shoe 143 can also be connected by a magnetic bridge with a large magnetic reluctance.
- the rotor 50 is rotatably received in the stator core 10 .
- the rotor 50 includes a rotary shaft 52 , a rotor core 54 , and permanent magnetic poles 56 .
- the rotor core 54 is disposed around the rotary shaft 52
- the permanent magnetic poles 56 are disposed around the rotor core 54 . It should be understood that the permanent magnetic poles 56 can also be directly fixed to the rotary shaft 52 .
- the rotary shaft 52 is generally a cylindrical shaft which is rotatably disposed in the box 21 .
- the rotary shaft 52 defines an axis coaxial with an axis of the stator core 10 and extending toward the receiving slot 2131 .
- the rotary shaft 52 is used to connect to the transmission assembly 400 and drive the transmission assembly 400 to move.
- the rotor core 54 is fixedly attached around the rotary shaft 52 and is received in the receiving space 16 .
- each permanent magnetic pole 56 away from the rotor core 54 is located on a same cylindrical surface centered at the center of the rotor 50 , such that an outer profile of cross sections of the permanent magnetic poles 56 is generally circular-shaped.
- an inner surface of a connection area of the two pole shoes 143 of each stator tooth 141 is formed with a recess 1433
- a connection area of the two extensions 1231 of each auxiliary tooth 1230 is formed with a recess 1233 .
- the inner surfaces of the pole shoes 143 of the stator teeth 14 and the extensions 1231 of the auxiliary teeth 1230 of the stator core 10 are located on a same cylindrical surface centered at the center of the rotor 50 , except for the parts of the recesses 1233 , 1433 .
- the stator and the rotor form therebetween a substantially even air gap. That is, the air gap is even, except for the portions corresponding to the recesses 1233 , 1433 , the openings 18 and opening slots between adjacent permanent magnetic poles 56 .
- the provision of the recesses 1433 , 1233 makes a pole axis L 2 of the rotor (a center line of the permanent magnetic pole) able to be offset from a pole axis L 1 of the stator (a center line of the stator tooth) by a certain angle.
- An included angle Q between the rotor pole axis and the stator pole axis is referred as a startup angle.
- the recesses 1433 , 1233 are aligned with centers of the stator teeth 14 and the auxiliary teeth 1230 , respectively, such that the startup angle Q is equal to or close to a 90-degree electric angle, which makes the rotor 50 easily achieve bidirectional startup.
- the startup direction of the rotor 50 can be changed.
- the positions of the recesses 1433 , 1233 can be changed depending upon design requirements.
- the recesses 1433 , 1233 are all offset from the centers of the stator teeth 14 and auxiliary teeth 1230 along a clockwise direction or a counter-clockwise direction, such that the rotor 50 starts easier in one direction than in the other direction.
- the winding 30 includes two coils respectively wound around the two stator teeth 14 . Each coil is wound around the winding portion 141 of one corresponding stator tooth 14 after passing through the corresponding receiving slot 15 . When an electric current flows through the winding 30 , the energized winding 30 produces an induction magnetic field.
- Magnetic fluxes produced by each energized coil enter the rotor 50 through the pole shoes 143 of the corresponding stator tooth 14 , enter the rotor 50 through an air gap between the pole shoes 143 and the rotor 50 , and go back to the stator tooth 14 through the extensions 1231 of the two auxiliary teeth 1230 adjacent the pole shoes 143 and the stator yoke 12 to thereby form magnetic flux loops.
- the magnetic fluxes produced by each energized coil go sequentially through the winding portion 141 , the two corresponding pole shoes 143 , the air gap between the pole shoes 143 and the rotor 50 , the rotor 50 , the air gap between two of the extensions 1231 adjacent to the two pole shoes 143 and the rotor 50 , the two corresponding extensions 1231 , and the stator yoke 12 to form two closed magnetic flux loops. Therefore, in this embodiment, upon being energized, the two coils can form four magnetic flux loops, i.e. forming a four-pole motor. In comparison with the traditional two-pole motor (no auxiliary poles are formed on the stator), the present invention reduces the magnetic path and magnetic reluctance, thereby increasing the output power of the driving assembly 100 .
- the outer surfaces of the four permanent magnetic poles 56 shall not be limited to the concentric circular arc surfaces as described above.
- the outer surfaces of the four permanent magnetic poles 56 may be eccentric circular arc surfaces.
- the outer surface of each permanent magnetic pole 56 is spaced from the center of the rotor by a distance that progressively decreases in a circumferential direction of the rotor from a middle to two ends of the outer surface and is symmetrical with respect to a center line of the outer surface, such that the outer surface of each permanent magnetic pole and the stator form therebetween an uneven air gap that is substantially symmetrical with respect to the center line of the outer surface.
- the motor winding is single-phase connected in this embodiment, i.e. the driving assembly 100 is a single phase permanent magnet brushless motor. Therefore, the above driving assembly 100 is a four-pole single phase permanent magnet brushless motor. Because the single phase permanent magnet brushless motor includes only two opposingly disposed stator teeth 14 , and the two coils are respectively disposed on the two stator teeth 14 , when the distance between the two first sidewalls 121 of the stator yoke 12 is fixed, the distance between the two second sidewalls 123 may be set to be relatively smaller. Therefore, with the overall size of the single phase permanent magnet brushless motor being reduced, the overall weight of the driving mechanism 1 is also reduced, and the output power of the single phase brushless motor is relatively greater.
- the single phase brushless motor when the single phase brushless motor is disposed in the box 21 , an outer iron housing of the traditional motor is omitted, which further reduces the space occupied by the motor, such that the overall size of the driving mechanism 1 is relatively smaller.
- the outer shape of the motor of the embodiment of the present invention is generally rectangular/obround, with its width (i.e. the size of one pair of opposite sides) being less than its length (i.e. the size of the other pair of opposite sides). The outer shape of the motor matches with the shape of the receiving chamber 2111 of the box 21 .
- the box 21 has a low profile structure (a size in a direction perpendicular to the second sidewall 123 of the motor is obviously less than a size in a direction parallel to the second sidewall 123 ), which is particularly suitable for use in applications with low profile space such as vehicle window lifting.
- a ratio of a maximal outer diameter of the rotor i.e. a maximal outer diameter of the rotor corresponding to the permanent magnet members
- a width of the stator core the distance between the outer surfaces of the two second sidewalls 123
- the rotor can be made as large as possible, thus increasing the output power of the motor.
- the number of the permanent magnetic poles 56 shall not be limited to four, which can be six, eight, ten, or even more.
- the number of the stator teeth 14 shall not be limited to two, which can be four, six, eight, ten, or even more, as long as the number of the permanent magnetic poles 56 is two times of the number of the stator teeth 14 .
- the number of the auxiliary teeth 1230 shall not be limited to two as described above, which can be four, six, eight, ten, or even more, as long as the number of the auxiliary teeth 1230 is equal to the number of the stator teeth 14 , and the number of the coils is equal to the number of the stator teeth 14 .
- the number relationship between the stator teeth, auxiliary teeth, coils and permanent magnetic poles 56 should satisfy the following conditions: the number of the stator teeth 14 , the auxiliary teeth and the coils is n, the n stator teeth 14 and the n auxiliary teeth 1230 are alternatively spaced along the circumferential direction of the stator yoke 12 , and each coil is wound around one corresponding stator tooth 14 ; the number of the permanent magnetic poles 56 is 2n.
- n main magnetic poles having the same polarity can be produced respectively at the n stator teeth 14
- n auxiliary magnetic poles having a polarity opposite to the polarity of the main magnetic poles can be produced respectively at the n auxiliary teeth 1230 .
- n is a positive integer greater than 1.
- the main magnetic pole and the auxiliary magnetic pole adjacent the main magnetic pole can form the magnetic flux loop therebetween.
- material consumption of the winding and the stator core of the motor can be reduced, which can therefore reduce cost.
- the size of the stator core may be set to be relatively smaller, which reduces the overall size of the motor and hence the overall size of the driving mechanism.
- the buffering member 300 is disposed between the stator core 10 and the first receiving portion 211 .
- the buffering member 300 is used to buffer external vibrations applied to the driving assembly 100 and absorb the vibrations caused by the driving assembly 100 during operation, such that the driving mechanism 1 overall has a small amount of vibrations, thus reducing the noises of the driving mechanism 1 during operation.
- a profile of the buffering member 300 substantially matches with the outer profile of the stator core 10 , and the buffering member 300 is attached around the stator core 10 .
- a sidewall of the receiving chamber 2111 applies a precompression force to the buffering member 300 , such that the stator core 10 of the driving assembly 100 can be firmly mounted in the box 21 .
- the buffering member 300 includes a sleeve portion 301 , a buffering portion 303 , and a retaining portion 305 .
- the buffering portion 303 and the retaining portion 305 are both disposed on the sleeve portion 301 .
- the sleeve portion 301 is of a generally ring-shaped column structure, which sleeves around an outer circumference of the stator core 10 .
- the buffering portion 303 includes a buffering protrusion, and there are a plurality of the buffering portions 303 .
- the buffering portions 303 are disposed on an outer circumference of the sleeve portion 301 and spaced along a circumferential direction of the sleeve portion 301 .
- Each buffering portion 303 is a substantially elongated protrusion which protrudes from an outer surface of the sleeve portion 301 and extends along an axial direction of the sleeve portion 301 .
- the buffering portions 303 surround an outer circumferential surface of the sleeve portion 301 , which makes an outer profile of a cross-section of the buffering member 300 is substantially wave-shaped, thus providing sufficient space for deformation of the buffering member 300 and hence enhancing the buffering and damping results of the buffering member 300 .
- the extending direction of the buffering portion 303 shall not be limited to the axial direction of the sleeve portion 301 as described above. Rather, the extending direction of the buffering portion 303 may also be at an angle relative to the axis of the sleeve portion 301 , or the buffering portion 303 may be curvedly formed on the outer circumferential surface of the sleeve portion 301 .
- the shape of the buffering portion 303 shall not be limited to the elongated protrusion as described above, which can also be of another structure.
- the buffering portion 303 may be configured to be a ball-shaped, cubic, or prism-shaped buffering protrusion, as long as the buffering portions 303 are spaced on the outer circumferential surface of the sleeve portion 301 to provide sufficient space for deformation of the buffering member 300 .
- the buffering portions 303 may be configured to have a combination of the above shapes, as long as the buffering portions 303 are spaced on the outer circumferential surface of the sleeve portion 301 to provide sufficient space for deformation of the buffering member 300 .
- the retaining portion 305 is substantially in the form a flange, which has an outer diameter size greater than an outer diameter size of the sleeve portion 301 and the buffering portion 303 .
- the retaining portion 305 is disposed adjacent one end of the sleeve portion 301 adjacent the cover body 23 , and is retained on the first receiving portion 211 of the box 21 .
- the cover body 23 is connected to the box 21 through a thread connection piece and exerts a precompression force to the retaining portion 305 , such that the buffering member 300 and the driving assembly 100 can be firmly mounted to the box 21 .
- the buffering member 300 is directly disposed between the stator core 10 and the box 21 , which can effectively buffer the vibrations produced by the driving assembly 100 during operation and facilitates the overall assembly of the driving mechanism 1 .
- the transmission assembly 400 is disposed in the second receiving portion 213 and connected to the rotary shaft 52 .
- the transmission assembly 400 is used to connect to the external device and drive the external device to move.
- the transmission assembly 400 includes a first transmission member 401 , a second transmission member 403 , and an output member 405 .
- the first transmission member 401 is disposed on the rotary shaft 52
- the second transmission member 403 is disposed within the second receiving portion 213 and connected to the first transmission member 401
- the output member 405 is driven by the second transmission member 403 .
- the transmission assembly 400 is a worm/worm gear mechanism.
- the first transmission member 401 is a worm
- the second transmission mechanism 403 is a worm gear
- the output member 405 is an output gear.
- the first transmission member 401 is fixedly disposed on the rotary shaft 52 and can rotate relative to the mounting assembly 200 along with the rotary shaft 52 .
- the second transmission assembly 403 is rotatably disposed in the second receiving portion 213 and engaged with the first transmission member 401 .
- a double gear forms the worm gear 403 and the output member 405 .
- the double gear is capable of rotation about a support shaft 407 .
- the support shaft 407 can be fixed to the box 21
- the output member 405 passes through the box 21 and protrudes to the outside environment.
- the output member 405 is used to connect to the external device.
- the rotary shaft 52 of the driving assembly 100 rotates, the rotary shaft 52 drives the second transmission member 403 to rotate through the first transmission member 401 , such that the output member 405 drives the external device to move.
- the output member 405 can be engaged with a part (such as a gear or rack) of the external device, for allowing the driving assembly 100 to drive the external device to move through the transmission assembly 400 .
- the transmission assembly 400 shall not be limited to the worm/worm gear structure as described above, which can also be of another transmission structure.
- the transmission assembly 400 may be a gear train transmission mechanism.
- the gear train is disposed in the box 21 and connected to the rotary shaft 52 to transmit the movement of the driving assembly 100 to the external device.
- the transmission assembly 400 may be a gear and rack transmission mechanism, a belt and gear transmission mechanism or another type of transmission mechanism, as long as the driving assembly 100 can drive the external device to move through the transmission mechanism.
- the driving mechanism 1 provided by the embodiment of the present invention can be utilized in a vehicle 3 to drive a part of the vehicle 3 to move.
- the driving mechanism 1 can be used as a vehicle window driving mechanism.
- the vehicle 3 may include a vehicle body, a door disposed on the vehicle body, and a vehicle window 2 disposed on the door.
- the driving mechanism 1 is disposed within the vehicle door and connected with the vehicle window 2 through the transmission assembly 400 .
- the output member 405 of the transmission assembly 400 is connected to the vehicle window 2 through another transmission part (such as a gear rack), so as to convert the rotation of the driving assembly 100 into translation of the vehicle window 2 .
- Controlling the rotation of the driving assembly 100 can control upward or downward movement of the vehicle window 2 relative to the vehicle door, thus opening or closing the vehicle window 2 .
- the driving mechanism 1 of the present invention has the advantages of small size and lightweight, it occupies a smaller mounting space within the vehicle door and can be firmly mounted.
- other structures of the vehicle are known structures, which are not described herein in detail.
- the driving mechanism 1 provided by the embodiment of the present invention can also be utilized in another type of movable device to drive the movable device itself or/and drive a part of the movable device to move.
- the driving mechanism 1 may be utilized in a remote-controlled vehicle.
- the driving mechanism 1 is connected to a wheel of the remote-controlled vehicle to drive the wheel to rotate, thus driving the remote-controlled vehicle to move.
- the driving mechanism 1 of the present invention has the advantages of small size and lightweight, it occupies a small mounting space within the remote-controlled vehicle and can be firmly mounted.
- other structures of the remote-controlled vehicle are known structures, which therefore are not described herein in detail.
- the driving mechanism 1 may be also utilized in a fan blade driving system of a device such as a fan or heat sink, which are not described herein one by one.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Window Of Vehicle (AREA)
- Vibration Prevention Devices (AREA)
- Springs (AREA)
- General Details Of Gearings (AREA)
Abstract
A driving mechanism and a vehicle utilizing the driving mechanism are provided. The driving mechanism includes a box, a motor and a transmission mechanism. The motor includes a stator core, a winding wound around the stator core, and a rotor. The stator core is at least partially received in the box. The rotor is rotatably received in the stator core. The above driving mechanism has a relatively smaller size.
Description
- This non-provisional patent application claims priority under 35 U.S.C. §119(a) from Patent Application No. 201510646078.5 filed in The People's Republic of China on Sep. 30, 2015.
- The present invention relates to a driving mechanism and a vehicle utilizing the driving mechanism.
- Open and close of a vehicle window is usually achieved by a driving mechanism. The driving mechanism generally includes a box, and a motor and a transmission assembly disposed in the box. When rotating, the motor drives the vehicle window to open or close through the transmission assembly. However, the traditional motor has a relatively independent structure, e.g. the motor includes an outer housing and a stator and a rotor disposed in the outer housing. Therefore, when the motor is connected to the box through its outer housing, it results in a large overall size of the driving mechanism, thus occupying a large mounting space.
- Accordingly, there is a desire for a driving mechanism with reduced size, and a vehicle utilizing the driving mechanism.
- The present invention provides a driving mechanism including a box, a motor and a transmission mechanism. The motor includes a stator core, a winding wound around the stator core, and a rotor. The stator core is at least partially received in the box. The rotor is rotatably received in the stator core.
- Preferably, no metal housing is disposed between the box and the stator core of the motor.
- Preferably, the box comprises a first receiving portion defining a receiving chamber, the stator core is at least partially received in the receiving chamber, the driving mechanism further comprises a cover body, and the cover body covers an opening of the receiving chamber.
- Preferably, the box further comprises a second receiving portion defining a receiving slot, the receiving slot is in communication with the receiving chamber, and the transmission assembly is disposed in the receiving slot and connected to the rotor.
- Preferably, a buffering member is disposed between the stator core and the box.
- Preferably, the buffering member comprises a sleeve portion attached around the stator core and a buffering portion disposed on the sleeve portion, and the buffering portion is disposed between the sleeve portion and the box.
- Preferably, the driving mechanism further comprises a cover body covering on the box, the buffering member further comprises a retaining portion, the retaining portion is a flange disposed at one end of the sleeve portion, and when the cover body covers on the box, the retaining portion is sandwiched between the cover body and the box.
- Preferably, the motor is a single phase permanent magnet brushless motor.
- Preferably, the stator core comprises a ring-shaped stator yoke and stator teeth coupled to an inner side of the stator yoke, and the winding is wound around the stator teeth.
- Preferably, the stator yoke includes two opposite first sidewalls and two opposite second sidewalls, the first sidewalls and the second sidewalls are connected such that the stator yoke is substantially rectangle shaped, the stator teeth are coupled to the first sidewalls.
- Preferably, a distance between the two first sidewalls is greater than a distance between the two second sidewalls.
- Preferably, the number of the stator teeth is two, each stator tooth comprises a winding portion and pole shoes coupled to the winding portion, the winding portion is connected to one corresponding first sidewall, the pole shoes are disposed at one end of the winding portion away from the first sidewall and faces toward the rotor, and the winding comprises two coils each wound around the winding portion of one corresponding stator tooth.
- Preferably, one side of each second sidewall facing toward the rotor is provided with two extensions, one end of each extension away from the second sidewall extends in a direction away from the second sidewall and away from the other extension, all the pole shoes and all the extensions cooperatively define a receiving space in which the rotor is received.
- Preferably, each pole shoe and the adjacent extension are spaced by an opening or connected by a magnetic bridge.
- Preferably, one side of the pole shoe facing toward the rotor defines a recess, and one side of the extension facing toward the rotor defines a recess.
- Preferably, the rotor comprises a rotary shaft ratatably disposed in the box, a rotor core disposed around the rotary shaft, and a plurality of permanent magnetic poles disposed around the rotor core.
- Preferably, the number of the permanent magnetic poles is 4, and the 4 permanent magnetic poles are spaced along a circumferential direction of the rotor core.
- Preferably, outer surfaces of the permanent magnetic poles are located on a same cylindrical surface.
- Preferably, the transmission assembly comprises a worm/worm gear mechanism, and the box is a gearbox.
- In another aspect, the present invention provides a vehicle including a vehicle window and any driving mechanism as described above. The motor is connected to the vehicle window through the transmission assembly and is capable of driving the vehicle window to move.
- In the above driving mechanism, because the stator core of its driving assembly can be partially received in the box, the outer iron housing of the traditional motor is omitted, which reduces its mounting space, such that the driving mechanism has a relatively smaller overall size and overall weight.
-
FIG. 1 is a perspective view of a driving mechanism according to one embodiment of the present invention. -
FIG. 2 is a perspective, exploded view of the driving mechanism ofFIG. 1 . -
FIG. 3 is a sectional view of the driving mechanism ofFIG. 1 . -
FIG. 4 is an enlarged view of the portion IV of the driving mechanism ofFIG. 3 . -
FIG. 5 is a perspective view of a driving assembly of the driving mechanism ofFIG. 2 . -
FIG. 6 is a perspective view of the driving assembly ofFIG. 5 . -
FIG. 7 is a cross-sectional view of the driving assembly ofFIG. 5 . -
FIG. 8 is a sectional view of the driving mechanism ofFIG. 1 , viewed from another direction. -
FIG. 9 is a perspective view of a buffering member of the driving mechanism ofFIG. 2 . -
FIG. 10 illustrates the driving mechanism ofFIG. 1 used in a vehicle. - The technical solutions of the embodiments of the present invention will be clearly and completely described as follows with reference to the accompanying drawings. Apparently, the embodiments as described below are merely part of rather than all, embodiments of the present invention. Based on the embodiments of the present disclosure, any other embodiment obtained by a person skilled in the art without paying any creative effort shall fall within the protection scope of the present invention.
- It is noted that, when a component is described to be “fixed” to another component, it can be directly fixed to the another component or there may be an intermediate component, i.e. indirectly fixed to the another component through a third component. When a component is described to be “connected” to another component, it can be directly connected to the another component or there may be an intermediate component. When a component is described to be “disposed” on another component, it can be directly disposed on the another component or there may be an intermediate component. The directional phraseologies such as “perpendicular”, “horizontal”, “left”, “right” or similar expressions are for the purposes of illustration only.
- Unless otherwise specified, all technical and scientific terms have the ordinary meaning as understood by people skilled in the art. The terms used in this disclosure are illustrative rather than limiting. The term “and/or” as used in this disclosure means that each and every combination of one or more associated items listed are included.
- Referring to
FIG. 1 , adriving mechanism 1 in accordance with one embodiment of the present invention is used to drive an external device to rotate or drive the external device to translate through a transmission mechanism. In particular, the external device may be a vehicle window 2 (as shown inFIG. 10 ). By controlling thedriving mechanism 1 to operate, thevehicle window 2 can be driven to open or close. Alternatively, the external device may be another movable device such as a wheel of a toy car or fan blades, which will be described in detail below. - Referring to
FIG. 2 , thedriving mechanism 1 includes amounting assembly 200, adriving assembly 100, abuffering member 300, and atransmission assembly 400. In this illustrated embodiment, specifically, thedriving assembly 100, thebuffering member 300 and thetransmission assembly 400 are all disposed on themounting assembly 200. Thetransmission assembly 400 is connected to the drivingassembly 100. The mountingassembly 200 is configured to mount thedriving mechanism 1 to the external device, for allowing the drivingassembly 100 to drive the external device to move through thetransmission assembly 400. - The buffering
member 300 is disposed between the drivingassembly 100 and the mountingassembly 200. The bufferingmember 300 is used to absorb vibrational impact produced by the drivingassembly 100 to reduce vibrations transmitted to the mountingassembly 200 and thetransmission assembly 400, thereby reducing the overall vibrations and noises of thedriving mechanism 1. - The mounting
assembly 200 includes abox 21, acover body 23, and mountingportions 25. In the illustrated specific embodiment, thecover body 23 covers on thebox 21, and the mountingportions 25 are connected to thebox 21. - In this embodiment, the
box 21 is a gearbox, which receives the drivingassembly 100 and thetransmission assembly 400. Thebox 21 includes afirst receiving portion 211 and asecond receiving portion 213 disposed adjacent to the first receivingportion 211. - The
first receiving portion 211 defines a generally column shaped receivingchamber 2111 for receiving the drivingassembly 100. The receivingchamber 2111 includes anopening 2113. The receivingchamber 2111 communicates with the outside environment via theopening 2113. - Referring to
FIG. 3 , thesecond receiving portion 213 defines areceiving slot 2131 that is generally circular disc-shaped, for receiving thetransmission assembly 400. The receivingslot 2131 communicates with the receivingchamber 2111 at one side of the receivingslot 2131, for allowing thetransmission assembly 400 to engage with the drivingassembly 100 at this communication area between the receivingslot 2131 and the receivingchamber 2111. - The
cover body 23 covers theopening 2113 and is detachably connected with thebox 21. Thecover body 23 is used to close the receivingchamber 2111, such that the receivingchamber 2111 and thereceiving slot 2131 are substantially isolated from the outside environment to achieve a dustproof seal. - In this embodiment, the number of the mounting
portions 25 is three. The three mounting portions 24 are spaced and disposed around thesecond receiving portion 213. The mountingportions 25 are used to connect to the external device so as to mount thedriving mechanism 1 to the external device. It should be understood that the number of the mountingportions 25 is not intended to be limited to three, which can also be two or four. - Further, in order to reasonably reduce the overall weight of the mounting
assembly 200 while ensuring a certain rigidity of the mountingassembly 200, part of the material of thebox 21 and/or the mountingportions 25 are removed to form a plurality of spaced weight-reduction sections 27 arranged on thebox 21 and/or the mountingportions 25. In this embodiment, the weight-reduction sections 27 are through-hole structures passing through thebox 21 and/or the mountingportions 25. It should be understood that the weight-reduction sections 27 may also be groove structures formed in thebox 21 and/or the mountingportions 25. - Referring again to
FIG. 2 , in this embodiment, the drivingassembly 100 is a single phase permanent magnet motor. Preferably, the drivingassembly 100 is single phase permanent magnet brushless motor. The drivingassembly 100 is partially received in the first receivingportion 211, for driving thetransmission assembly 400 to move which further drives the external device to move. - Referring to
FIG. 3 andFIG. 4 , at least part (in this embodiment, a large part) of the drivingassembly 100 is received in the first receivingportion 211 of thebox 21, and thecover body 23 covers one end of the drivingassembly 100 and is fixedly connected to thebox 21 through fasteners such as screws, such that thedriving mechanism 1 overall has a smaller size, and the size of the external device utilizing thedriving mechanism 1 can therefore be reduced. - Referring to
FIG. 5 andFIG. 6 , the drivingassembly 100 includes astator core 10, a winding 30, and arotor 50. In the illustrated specific embodiment, the drivingassembly 100 is an inner rotor motor, thestator core 10 is received in thebox 21 of the mountingassembly 200, the winding 30 is wound around thestator core 10, therotor 50 is rotatably received in thestator core 10 and connected to thetransmission assembly 400. - The
stator core 10 includes astator yoke 12 andstator teeth 14. In the illustrated specific embodiment, thestator teeth 14 extend inwardly from thestator yoke 12. Thestator yoke 12 is directly fixedly mounted within the first receivingportion 211 of thebox 21. As a result, an outer housing of a traditional motor is omitted from the drivingassembly 100. That is, part of thebox 21 forms the outer housing of the motor, which further reduces the size and weight of the external device utilizing thedriving mechanism 1. - Referring also to
FIG. 7 , which is a cross-sectional view of the drivingassembly 100 according to one embodiment of the present invention. The cross-section as used in this disclosure refers to an axial section, i.e. a section formed by a plane cutting through the drivingassembly 100, wherein the plane is perpendicular to the rotary shaft of the drivingassembly 100. A cross-section of thestator yoke 12 is substantially in the shape of a closed rectangle, including two arcuatefirst sidewalls 121 and two flatsecond sidewalls 123. The twofirst sidewalls 121 are disposed opposing to each other, the twosecond sidewalls 123 are disposed opposing to each other, and two distal ends of eachsecond sidewall 123 are connected to two distal ends of the twofirst sidewalls 121, respectively, such that the cross-section of thestator yoke 12 is in the shape of a continuously closed ring. - In this embodiment, specifically, outer circumferential surfaces of the
first sidewalls 121 are substantially a part of a cylindrical surface, such that the outer profile of the cross-section of thefirst sidewall 121 is in the shape of a circular arc. Inner surfaces of thefirst sidewalls 121 are substantially flat surfaces and, therefore, eachfirst sidewall 121 has a thickness that is smaller at two sides than at a middle thereof. An outer circumferential surface of eachsecond sidewall 123 is substantially a flat surface, such that the outer profile of the cross-section of thesecond sidewall 123 is generally a straight line segment. - An inner surface of each
second sidewall 123 is provided with anauxiliary tooth 1230. Theauxiliary tooth 1230 includes twoextensions 1231. Theextensions 1231 are used to conduct magnetic flux and assist thestator teeth 14 to form magnetic flux loops. One end of eachextension 1231 is a connecting end (not labeled), and the other end is an extension end (not labeled). The connecting ends of the twoextensions 1231 are connected with each other and connected to a substantially middle position of thesecond sidewall 123. The extension ends of the twoextensions 1231 both extend in a direction away from thesecond sidewall 123, and the extension ends of the twoextensions 1231 are spaced away from each other, such that an outer profile of cross-sections of the twoextensions 1231 is substantially V-shaped or arc-shaped. - In this embodiment, the number of the
stator teeth 14 is two. Thestator teeth 14 are connected to the inner surfaces of thefirst sidewalls 121, respectively, for allowing the winding 30 to be wound thereon. - In the illustrated embodiment, specifically, each
stator tooth 14 is substantially Y-shaped, including a windingportion 141 and twopole shoes 143. The windingportion 141 extends radially inwardly from a middle of the inner surface of thefirst sidewall 121. The twopole shoes 143 are disposed at one end of the windingportion 141 away from the correspondingfirst sidewall 121. - In this embodiment, the two
pole shoes 143 of eachstator tooth 14 extend from a distal end of the windingportion 141 along a circumferential direction of therotor 50, toward twoadjacent extensions 1231 at opposite sides of the windingportion 141, respectively, such that an outer profile of cross-sections of the twopole shoes 143 is substantially V-shaped or arc-shaped, and hence the twopole shoes 143 and the windingportion 141 cooperatively form the Y-shaped profile of thestator tooth 14. The pole shoes 143 can prevent the winding 30 from falling off the windingportion 141 and, at the same time, can be used to conduct magnetic flux. - Similar to the construction of the
extension 1231, eachpole shoe 143 has one end as a connecting end (not labeled) and the other end as an extension end (not shown). The connecting ends of the twopole shoes 143 are connected with each other and connected to one side of the windingportion 141 away from thefirst sidewall 121. The extension ends of the twopole shoes 143 both extend in the circumferential direction of therotor 50 and away from thefirst sidewall 141, and the extension ends of the twopole shoes 143 are spaced away from each other, such that an outer profile of cross-sections of the twopole shoes 143 is substantially V-shaped or arc-shaped and hence an outer profile of the cross-section of thestator tooth 14 is substantially Y-shaped. - Further, the extension end of each
pole shoe 143 is close to an extension end of theextension 1231 of theauxiliary tooth 1230 adjacent thepole shoe 143. As a result, the pole shoes 143 of thestator teeth 14 and theextensions 1231 of theauxiliary teeth 1230 cooperatively faun a receivingspace 16 for receiving therotor 50 therein. At the same time, eachpole shoe 143, theextension 1231 adjacent thepole shoe 143 and thestator yoke 12 cooperatively form a receivingslot 15 for receiving the winding 30 therein. - Further, the distal end of each
pole shoe 143 and the distal end of theextension 1231 adjacent thepole shoe 143 are spaced by a preset distance to form anopening 18, thereby reducing magnetic leakage. It should be understood that the distal end of theextension 1231 andadjacent pole shoe 143 can also be connected by a magnetic bridge with a large magnetic reluctance. - The
rotor 50 is rotatably received in thestator core 10. In the illustrated embodiment, specifically, therotor 50 includes arotary shaft 52, arotor core 54, and permanentmagnetic poles 56. Therotor core 54 is disposed around therotary shaft 52, and the permanentmagnetic poles 56 are disposed around therotor core 54. It should be understood that the permanentmagnetic poles 56 can also be directly fixed to therotary shaft 52. - Referring again to
FIG. 3 , in this embodiment, therotary shaft 52 is generally a cylindrical shaft which is rotatably disposed in thebox 21. Therotary shaft 52 defines an axis coaxial with an axis of thestator core 10 and extending toward the receivingslot 2131. Therotary shaft 52 is used to connect to thetransmission assembly 400 and drive thetransmission assembly 400 to move. - The
rotor core 54 is fixedly attached around therotary shaft 52 and is received in the receivingspace 16. - Preferably, an outer circumferential surface of each permanent
magnetic pole 56 away from therotor core 54 is located on a same cylindrical surface centered at the center of therotor 50, such that an outer profile of cross sections of the permanentmagnetic poles 56 is generally circular-shaped. - Further, an inner surface of a connection area of the two
pole shoes 143 of eachstator tooth 141 is formed with arecess 1433, and a connection area of the twoextensions 1231 of eachauxiliary tooth 1230 is formed with arecess 1233. The inner surfaces of the pole shoes 143 of thestator teeth 14 and theextensions 1231 of theauxiliary teeth 1230 of thestator core 10 are located on a same cylindrical surface centered at the center of therotor 50, except for the parts of therecesses recesses openings 18 and opening slots between adjacent permanentmagnetic poles 56. - In this embodiment, the provision of the
recesses recesses stator teeth 14 and theauxiliary teeth 1230, respectively, such that the startup angle Q is equal to or close to a 90-degree electric angle, which makes therotor 50 easily achieve bidirectional startup. By altering the direction of the electric current in the winding 30, the startup direction of therotor 50 can be changed. - It should be understood that the positions of the
recesses recesses stator teeth 14 andauxiliary teeth 1230 along a clockwise direction or a counter-clockwise direction, such that therotor 50 starts easier in one direction than in the other direction. - In this embodiment, there are four permanent magnet members. The four permanent magnet members are fixedly disposed on an outer circumferential surface of the
rotor core 54 and are spaced along the circumferential direction of therotor core 54. Each permanent magnet member forms one of the permanentmagnetic pole 56, and two adjacent permanentmagnetic poles 56 have opposite polarities. The winding 30 includes two coils respectively wound around the twostator teeth 14. Each coil is wound around the windingportion 141 of one correspondingstator tooth 14 after passing through the corresponding receivingslot 15. When an electric current flows through the winding 30, the energized winding 30 produces an induction magnetic field. Magnetic fluxes produced by each energized coil enter therotor 50 through the pole shoes 143 of thecorresponding stator tooth 14, enter therotor 50 through an air gap between the pole shoes 143 and therotor 50, and go back to thestator tooth 14 through theextensions 1231 of the twoauxiliary teeth 1230 adjacent the pole shoes 143 and thestator yoke 12 to thereby form magnetic flux loops. That is, the magnetic fluxes produced by each energized coil go sequentially through the windingportion 141, the twocorresponding pole shoes 143, the air gap between the pole shoes 143 and therotor 50, therotor 50, the air gap between two of theextensions 1231 adjacent to the twopole shoes 143 and therotor 50, the twocorresponding extensions 1231, and thestator yoke 12 to form two closed magnetic flux loops. Therefore, in this embodiment, upon being energized, the two coils can form four magnetic flux loops, i.e. forming a four-pole motor. In comparison with the traditional two-pole motor (no auxiliary poles are formed on the stator), the present invention reduces the magnetic path and magnetic reluctance, thereby increasing the output power of the drivingassembly 100. - It should be understood that the outer surfaces of the four permanent
magnetic poles 56 shall not be limited to the concentric circular arc surfaces as described above. For example, the outer surfaces of the four permanentmagnetic poles 56 may be eccentric circular arc surfaces. For example, the outer surface of each permanentmagnetic pole 56 is spaced from the center of the rotor by a distance that progressively decreases in a circumferential direction of the rotor from a middle to two ends of the outer surface and is symmetrical with respect to a center line of the outer surface, such that the outer surface of each permanent magnetic pole and the stator form therebetween an uneven air gap that is substantially symmetrical with respect to the center line of the outer surface. - Preferably, the motor winding is single-phase connected in this embodiment, i.e. the driving
assembly 100 is a single phase permanent magnet brushless motor. Therefore, theabove driving assembly 100 is a four-pole single phase permanent magnet brushless motor. Because the single phase permanent magnet brushless motor includes only two opposingly disposedstator teeth 14, and the two coils are respectively disposed on the twostator teeth 14, when the distance between the twofirst sidewalls 121 of thestator yoke 12 is fixed, the distance between the twosecond sidewalls 123 may be set to be relatively smaller. Therefore, with the overall size of the single phase permanent magnet brushless motor being reduced, the overall weight of thedriving mechanism 1 is also reduced, and the output power of the single phase brushless motor is relatively greater. In addition, when the single phase brushless motor is disposed in thebox 21, an outer iron housing of the traditional motor is omitted, which further reduces the space occupied by the motor, such that the overall size of thedriving mechanism 1 is relatively smaller. Furthermore, the outer shape of the motor of the embodiment of the present invention is generally rectangular/obround, with its width (i.e. the size of one pair of opposite sides) being less than its length (i.e. the size of the other pair of opposite sides). The outer shape of the motor matches with the shape of the receivingchamber 2111 of thebox 21. In the driving mechanism as configured above, thebox 21 has a low profile structure (a size in a direction perpendicular to thesecond sidewall 123 of the motor is obviously less than a size in a direction parallel to the second sidewall 123), which is particularly suitable for use in applications with low profile space such as vehicle window lifting. In the motor of the embodiment of the present invention, a ratio of a maximal outer diameter of the rotor (i.e. a maximal outer diameter of the rotor corresponding to the permanent magnet members) to a width of the stator core (the distance between the outer surfaces of the two second sidewalls 123) can be greater than 0.6. That is, the rotor can be made as large as possible, thus increasing the output power of the motor. - It should be understood that the number of the permanent
magnetic poles 56 shall not be limited to four, which can be six, eight, ten, or even more. Likewise, the number of thestator teeth 14 shall not be limited to two, which can be four, six, eight, ten, or even more, as long as the number of the permanentmagnetic poles 56 is two times of the number of thestator teeth 14. Correspondingly, the number of theauxiliary teeth 1230 shall not be limited to two as described above, which can be four, six, eight, ten, or even more, as long as the number of theauxiliary teeth 1230 is equal to the number of thestator teeth 14, and the number of the coils is equal to the number of thestator teeth 14. - In short, the number relationship between the stator teeth, auxiliary teeth, coils and permanent
magnetic poles 56 should satisfy the following conditions: the number of thestator teeth 14, the auxiliary teeth and the coils is n, then stator teeth 14 and the nauxiliary teeth 1230 are alternatively spaced along the circumferential direction of thestator yoke 12, and each coil is wound around one correspondingstator tooth 14; the number of the permanentmagnetic poles 56 is 2n. When the n coils are energized, n main magnetic poles having the same polarity can be produced respectively at then stator teeth 14, and n auxiliary magnetic poles having a polarity opposite to the polarity of the main magnetic poles can be produced respectively at the nauxiliary teeth 1230. Wherein, n is a positive integer greater than 1. In the above motor, upon the winding 30 being energized, the main magnetic pole and the auxiliary magnetic pole adjacent the main magnetic pole can form the magnetic flux loop therebetween. In comparison with the traditional two-pole motor, the magnetic path is improved. To obtain the same output power, material consumption of the winding and the stator core of the motor can be reduced, which can therefore reduce cost. On the other hand, when the outer diameter of the rotor is fixed, the size of the stator core may be set to be relatively smaller, which reduces the overall size of the motor and hence the overall size of the driving mechanism. - Referring also to
FIG. 8 , the bufferingmember 300 is disposed between thestator core 10 and the first receivingportion 211. The bufferingmember 300 is used to buffer external vibrations applied to the drivingassembly 100 and absorb the vibrations caused by the drivingassembly 100 during operation, such that thedriving mechanism 1 overall has a small amount of vibrations, thus reducing the noises of thedriving mechanism 1 during operation. - Referring to
FIG. 9 andFIG. 3 , a profile of the bufferingmember 300 substantially matches with the outer profile of thestator core 10, and thebuffering member 300 is attached around thestator core 10. When thestator core 10 and thebuffering member 300 are received in the first receivingportion 211, a sidewall of the receivingchamber 2111 applies a precompression force to thebuffering member 300, such that thestator core 10 of the drivingassembly 100 can be firmly mounted in thebox 21. - The buffering
member 300 includes asleeve portion 301, abuffering portion 303, and a retainingportion 305. In the illustrated specific embodiment, thebuffering portion 303 and the retainingportion 305 are both disposed on thesleeve portion 301. - The
sleeve portion 301 is of a generally ring-shaped column structure, which sleeves around an outer circumference of thestator core 10. - In this embodiment, the
buffering portion 303 includes a buffering protrusion, and there are a plurality of the bufferingportions 303. The bufferingportions 303 are disposed on an outer circumference of thesleeve portion 301 and spaced along a circumferential direction of thesleeve portion 301. Eachbuffering portion 303 is a substantially elongated protrusion which protrudes from an outer surface of thesleeve portion 301 and extends along an axial direction of thesleeve portion 301. The bufferingportions 303 surround an outer circumferential surface of thesleeve portion 301, which makes an outer profile of a cross-section of the bufferingmember 300 is substantially wave-shaped, thus providing sufficient space for deformation of the bufferingmember 300 and hence enhancing the buffering and damping results of the bufferingmember 300. It should be understood that the extending direction of thebuffering portion 303 shall not be limited to the axial direction of thesleeve portion 301 as described above. Rather, the extending direction of thebuffering portion 303 may also be at an angle relative to the axis of thesleeve portion 301, or thebuffering portion 303 may be curvedly formed on the outer circumferential surface of thesleeve portion 301. It should also be understood that the shape of thebuffering portion 303 shall not be limited to the elongated protrusion as described above, which can also be of another structure. For example, thebuffering portion 303 may be configured to be a ball-shaped, cubic, or prism-shaped buffering protrusion, as long as the bufferingportions 303 are spaced on the outer circumferential surface of thesleeve portion 301 to provide sufficient space for deformation of the bufferingmember 300. Alternatively, the bufferingportions 303 may be configured to have a combination of the above shapes, as long as the bufferingportions 303 are spaced on the outer circumferential surface of thesleeve portion 301 to provide sufficient space for deformation of the bufferingmember 300. - The retaining
portion 305 is substantially in the form a flange, which has an outer diameter size greater than an outer diameter size of thesleeve portion 301 and thebuffering portion 303. The retainingportion 305 is disposed adjacent one end of thesleeve portion 301 adjacent thecover body 23, and is retained on the first receivingportion 211 of thebox 21. When thestator core 10 and thebuffering member 300 are received in the first receivingportion 211 and thecover body 23 is fixed to thebox 21, the retainingportion 305 is sandwiched between thecover body 23 and the box 21 (FIG. 4 ) in an axial direction of the motor, to achieve energy absorption and vibration damping between thecover body 23 and thebox 21 and, as the same time, achieves dustproof seal function. Preferably, thecover body 23 is connected to thebox 21 through a thread connection piece and exerts a precompression force to the retainingportion 305, such that the bufferingmember 300 and the drivingassembly 100 can be firmly mounted to thebox 21. - The buffering
member 300 is directly disposed between thestator core 10 and thebox 21, which can effectively buffer the vibrations produced by the drivingassembly 100 during operation and facilitates the overall assembly of thedriving mechanism 1. - Referring again to
FIG. 2 andFIG. 3 , thetransmission assembly 400 is disposed in thesecond receiving portion 213 and connected to therotary shaft 52. Thetransmission assembly 400 is used to connect to the external device and drive the external device to move. - The
transmission assembly 400 includes afirst transmission member 401, asecond transmission member 403, and anoutput member 405. In the illustrated specific embodiment, thefirst transmission member 401 is disposed on therotary shaft 52, thesecond transmission member 403 is disposed within thesecond receiving portion 213 and connected to thefirst transmission member 401, and theoutput member 405 is driven by thesecond transmission member 403. - In this embodiment, the
transmission assembly 400 is a worm/worm gear mechanism. Thefirst transmission member 401 is a worm, thesecond transmission mechanism 403 is a worm gear, and theoutput member 405 is an output gear. Specifically, thefirst transmission member 401 is fixedly disposed on therotary shaft 52 and can rotate relative to the mountingassembly 200 along with therotary shaft 52. Thesecond transmission assembly 403 is rotatably disposed in thesecond receiving portion 213 and engaged with thefirst transmission member 401. A double gear forms theworm gear 403 and theoutput member 405. The double gear is capable of rotation about asupport shaft 407. Thesupport shaft 407 can be fixed to thebox 21, and theoutput member 405 passes through thebox 21 and protrudes to the outside environment. Theoutput member 405 is used to connect to the external device. When therotary shaft 52 of the drivingassembly 100 rotates, therotary shaft 52 drives thesecond transmission member 403 to rotate through thefirst transmission member 401, such that theoutput member 405 drives the external device to move. Theoutput member 405 can be engaged with a part (such as a gear or rack) of the external device, for allowing the drivingassembly 100 to drive the external device to move through thetransmission assembly 400. - It should be understood that the
transmission assembly 400 shall not be limited to the worm/worm gear structure as described above, which can also be of another transmission structure. For example, thetransmission assembly 400 may be a gear train transmission mechanism. The gear train is disposed in thebox 21 and connected to therotary shaft 52 to transmit the movement of the drivingassembly 100 to the external device. Alternatively, thetransmission assembly 400 may be a gear and rack transmission mechanism, a belt and gear transmission mechanism or another type of transmission mechanism, as long as the drivingassembly 100 can drive the external device to move through the transmission mechanism. - Referring to
FIG. 10 , thedriving mechanism 1 provided by the embodiment of the present invention can be utilized in avehicle 3 to drive a part of thevehicle 3 to move. In particular, thedriving mechanism 1 can be used as a vehicle window driving mechanism. Thevehicle 3 may include a vehicle body, a door disposed on the vehicle body, and avehicle window 2 disposed on the door. Thedriving mechanism 1 is disposed within the vehicle door and connected with thevehicle window 2 through thetransmission assembly 400. Preferably, theoutput member 405 of thetransmission assembly 400 is connected to thevehicle window 2 through another transmission part (such as a gear rack), so as to convert the rotation of the drivingassembly 100 into translation of thevehicle window 2. Controlling the rotation of the drivingassembly 100 can control upward or downward movement of thevehicle window 2 relative to the vehicle door, thus opening or closing thevehicle window 2. Because thedriving mechanism 1 of the present invention has the advantages of small size and lightweight, it occupies a smaller mounting space within the vehicle door and can be firmly mounted. In this embodiment, other structures of the vehicle are known structures, which are not described herein in detail. - The
driving mechanism 1 provided by the embodiment of the present invention can also be utilized in another type of movable device to drive the movable device itself or/and drive a part of the movable device to move. - For example, the
driving mechanism 1 may be utilized in a remote-controlled vehicle. Thedriving mechanism 1 is connected to a wheel of the remote-controlled vehicle to drive the wheel to rotate, thus driving the remote-controlled vehicle to move. Because thedriving mechanism 1 of the present invention has the advantages of small size and lightweight, it occupies a small mounting space within the remote-controlled vehicle and can be firmly mounted. In this embodiment, other structures of the remote-controlled vehicle are known structures, which therefore are not described herein in detail. Alternatively, thedriving mechanism 1 may be also utilized in a fan blade driving system of a device such as a fan or heat sink, which are not described herein one by one. - Although the invention is described with reference to one or more embodiments, the above description of the embodiments is used only to enable people skilled in the art to practice or use the invention. It should be appreciated by those skilled in the art that various modifications are possible without departing from the spirit or scope of the present invention. The embodiments illustrated herein should not be interpreted as limits to the present invention, and the scope of the invention is to be determined by reference to the claims that follow.
Claims (20)
1. A driving mechanism comprising:
a motor comprising a stator core, a winding wound around the stator core, and a rotor rotatably received in the stator core;
a box configured to receive the motor, the stator core being at least partially fixedly disposed in the box; and
a transmission assembly disposed in the box and connected to the rotor.
2. The driving mechanism of claim 1 , wherein no metal housing is disposed between the box and the stator core of the motor.
3. The driving mechanism of claim 1 , wherein the box comprises a first receiving portion defining a receiving chamber, the stator core is at least partially received in the receiving chamber, the driving mechanism further comprises a cover body, and the cover body covers an opening of the receiving chamber.
4. The driving mechanism of claim 3 , wherein the box further comprises a second receiving portion defining a receiving slot, the receiving slot is in communication with the receiving chamber, and the transmission assembly is disposed in the receiving slot and connected to the rotor.
5. The driving mechanism of claim 1 , wherein a buffering member is disposed between the stator core and the box.
6. The driving mechanism of claim 5 , wherein the buffering member comprises a sleeve portion attached around the stator core and a buffering portion disposed on the sleeve portion, and the buffering portion is disposed between the sleeve portion and the box.
7. The driving mechanism of claim 6 , wherein the driving mechanism further comprises a cover body covering on the box, the buffering member further comprises a retaining portion, the retaining portion is a flange disposed at one end of the sleeve portion, and when the cover body covers on the box, the retaining portion is sandwiched between the cover body and the box.
8. The driving mechanism of claim 1 , wherein the motor is a single phase permanent magnet brushless motor.
9. The driving mechanism of claim 1 , wherein the stator core comprises a ring-shaped stator yoke and stator teeth coupled to an inner side of the stator yoke, and the winding is wound around the stator teeth.
10. The driving mechanism of claim 9 , wherein the stator yoke includes two opposite first sidewalls and two opposite second sidewalls, the first sidewalls and the second sidewalls are connected, the stator teeth are coupled to the first sidewalls.
11. The driving mechanism of claim 10 , wherein a distance between the two first sidewalls is greater than a distance between the two second sidewalls.
12. The driving mechanism of claim 10 , wherein the number of the stator teeth is two, each stator tooth comprises a winding portion and pole shoes coupled to the winding portion, the winding portion is connected to one corresponding first sidewall, the pole shoes are disposed at one end of the winding portion away from the first sidewall and faces toward the rotor, and the winding comprises two coils each wound around the winding portion of one corresponding stator tooth.
13. The driving mechanism of claim 12 , wherein one side of each second sidewall facing toward the rotor is provided with two extensions, one end of each extension away from the second sidewall extends in a direction away from the second sidewall and away from the other extension, all the pole shoes and all the extensions cooperatively define a receiving space in which the rotor is received.
14. The driving mechanism of claim 13 , wherein each pole shoe and the adjacent extension are spaced by an opening or connected by a magnetic bridge.
15. The driving mechanism of claim 13 , wherein one side of the pole shoe facing toward the rotor defines a recess, and one side of the extension facing toward the rotor defines a recess.
16. The driving mechanism of claim 1 , wherein the rotor comprises a rotary shaft ratatably disposed in the box, a rotor core disposed around the rotary shaft, and a plurality of permanent magnetic poles disposed around the rotor core.
17. The driving mechanism of claim 16 , wherein the number of the permanent magnetic poles is 4, and the 4 permanent magnetic poles are spaced along a circumferential direction of the rotor core.
18. The driving mechanism of claim 17 , wherein outer surfaces of the permanent magnetic poles are located on a same cylindrical surface.
19. The driving mechanism of claim 1 , wherein the transmission assembly comprises a worm/worm gear mechanism, and the box is a gearbox.
20. A vehicle comprising:
a vehicle window; and
a driving mechanism, comprising:
a motor comprising a stator core, a winding wound around the stator core, and a rotor rotatably received in the stator core;
a box configured to receive the motor, the stator core being at least partially fixedly disposed in the box; and
a transmission assembly disposed in the box and connected to the rotor;
wherein the motor is connected to the vehicle window through the transmission assembly, to drive the vehicle window to move.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510646078.5A CN106558945A (en) | 2015-09-30 | 2015-09-30 | Drive mechanism and the vehicle using the drive mechanism |
CN201510646078.5 | 2015-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20170093248A1 true US20170093248A1 (en) | 2017-03-30 |
Family
ID=58282240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/274,157 Abandoned US20170093248A1 (en) | 2015-09-30 | 2016-09-23 | Driving Mechanism and Vehicle Utilizing the Driving Mechanism |
Country Status (5)
Country | Link |
---|---|
US (1) | US20170093248A1 (en) |
JP (1) | JP2017085873A (en) |
KR (1) | KR20170039585A (en) |
CN (1) | CN106558945A (en) |
DE (1) | DE102016117661A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170328113A1 (en) * | 2016-05-16 | 2017-11-16 | Johnson Electric S.A. | Driving Device And Vehicle Window Lifter Comprising Same |
US11190072B2 (en) * | 2016-11-16 | 2021-11-30 | Moving Magnet Technologies | Stator for high speed electric machine having particular dimensions for high speed opertations |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112165205B (en) * | 2020-09-25 | 2022-04-22 | 宁波精成电机有限公司 | Abnormal sound eliminating structure of motor and automobile window-swinging driving structure |
CN113833380A (en) * | 2021-08-23 | 2021-12-24 | 东风博泽汽车系统有限公司 | Cover plate structure and integrated glass lifting driving device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5998904A (en) * | 1997-06-30 | 1999-12-07 | Mitsubishi Heavy Industries, Ltd. | Motor |
US20090134738A1 (en) * | 2005-11-28 | 2009-05-28 | Matsushita Electric Industrial Co., Ltd. | Motor and apparatus employing the same |
US7663273B2 (en) * | 2004-11-22 | 2010-02-16 | Hitachi, Ltd. | Motor control apparatus, power steering apparatus and brake control apparatus |
US20120021208A1 (en) * | 2008-09-02 | 2012-01-26 | Nitto Denko Corporation | Composite film |
US20130334915A1 (en) * | 2010-12-20 | 2013-12-19 | Valeo Equipements Electriques Moteur | Voltage regulator device for a rotary electric machine, bearing for such a machine equipped with such a device and such a machine comprising such a bearing |
-
2015
- 2015-09-30 CN CN201510646078.5A patent/CN106558945A/en active Pending
-
2016
- 2016-09-20 DE DE102016117661.3A patent/DE102016117661A1/en not_active Withdrawn
- 2016-09-23 US US15/274,157 patent/US20170093248A1/en not_active Abandoned
- 2016-09-28 KR KR1020160124705A patent/KR20170039585A/en unknown
- 2016-09-30 JP JP2016193051A patent/JP2017085873A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5998904A (en) * | 1997-06-30 | 1999-12-07 | Mitsubishi Heavy Industries, Ltd. | Motor |
US7663273B2 (en) * | 2004-11-22 | 2010-02-16 | Hitachi, Ltd. | Motor control apparatus, power steering apparatus and brake control apparatus |
US20090134738A1 (en) * | 2005-11-28 | 2009-05-28 | Matsushita Electric Industrial Co., Ltd. | Motor and apparatus employing the same |
US20120021208A1 (en) * | 2008-09-02 | 2012-01-26 | Nitto Denko Corporation | Composite film |
US20130334915A1 (en) * | 2010-12-20 | 2013-12-19 | Valeo Equipements Electriques Moteur | Voltage regulator device for a rotary electric machine, bearing for such a machine equipped with such a device and such a machine comprising such a bearing |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170328113A1 (en) * | 2016-05-16 | 2017-11-16 | Johnson Electric S.A. | Driving Device And Vehicle Window Lifter Comprising Same |
US11190072B2 (en) * | 2016-11-16 | 2021-11-30 | Moving Magnet Technologies | Stator for high speed electric machine having particular dimensions for high speed opertations |
Also Published As
Publication number | Publication date |
---|---|
CN106558945A (en) | 2017-04-05 |
DE102016117661A1 (en) | 2017-03-30 |
KR20170039585A (en) | 2017-04-11 |
JP2017085873A (en) | 2017-05-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20170093249A1 (en) | Single Phase Permanent Magnet Motor And Driving Mechanism | |
US20170093248A1 (en) | Driving Mechanism and Vehicle Utilizing the Driving Mechanism | |
KR102598034B1 (en) | Compact motor reducer | |
AU2016366625B2 (en) | A stator assembly | |
US20170093251A1 (en) | Driving Mechanism And Vehicle Utilizing The Driving Mechanism | |
US20160344271A1 (en) | Single Phase Brushless Motor and Electric Apparatus Having the Same | |
JP6402915B2 (en) | Brushless motor and electric tool | |
RU2371828C1 (en) | Magnetic power rotary device | |
KR101128590B1 (en) | Dual-rotor motor | |
KR20170039578A (en) | Vehicle window lifting mechanism | |
US10246291B2 (en) | Yarn feeder | |
WO2011111357A1 (en) | Motor | |
WO2020183884A1 (en) | Magnetic bearing, drive device equipped with same, and pump | |
US20170093250A1 (en) | Vehicle window driving mechanism and vehicle utilizing the same | |
JP2002171735A (en) | Dc brushless motor | |
JP4408093B2 (en) | Rotating electric machine | |
US20170089117A1 (en) | Vehicle window lifting mechanism | |
CN205265444U (en) | Actuating mechanism and use this actuating mechanism's vehicle | |
JP2004215397A (en) | Stepping motor | |
JPS61214763A (en) | Brushless motor | |
JP2008230600A (en) | Seat adjusting device | |
JP5891428B2 (en) | Actuator device | |
JPH05103455A (en) | Rotary actuator | |
CN205092721U (en) | Actuating mechanism and use this actuating mechanism's vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: JOHNSON ELECTRIC S.A., SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LI, YUE;ZHOU, CHUI YOU;WANG, YONG;AND OTHERS;REEL/FRAME:039868/0455 Effective date: 20160825 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |